Secret mailbox in the crystal

Quantum Communication


On a crystal disc, known as a semiconductor wafer, the researchers grow the quantum dots using a multi-step process in an ultra-high vacuum chamber. © Damian Gorczany
A Bochum-based team led by MRD member Dr. Arne Ludwig is setting new standards in quantum communication by producing world-class quantum dots — tiny light particles used to transmit information securely. Their patented method allows precise placement of these dots, a major step forward in the field. Together with simulation experts from ICAMS - Interdisciplinary Centre for Advanced Materials Simulation, they’re pushing boundaries to refine this tech even further.

https://news.rub.de/wissenschaft/2025-04-23-quantenkommunikation-geheimbriefkasten-im-kristall